Dimensional analysis on $v=kF^xl^ym^t$

Question

The velocity V of a wave moving in a stretched string can be written as, ( $v=kF^xl^ym^t$ ). where $F$ is the tension in the string, $l$ is it's length and m is the mass of the string and $k$ is a dimensionless constant. DETERMINE THE VALUES OF $x, y, t$.